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Finding the Fourth Proportional to 489,030.20, 734,711.70 and 437,708.60

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Solution

The fourth proportional to 489,030.20, 734,711.70 and 437,708.60 is: 657,606.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,030.20 : 734,711.70 = 437,708.60 : x
  2. Step 2: Convert to fraction form
    489,030.20/734,711.70 = 437,708.60/x
  3. Step 3: Cross multiply
    489,030.20x = 734,711.70 × 437,708.60
  4. Step 4: Simplify right side
    489,030.20x = 321,589,629,610.62
  5. Step 5: Solve for x
    x = 321,589,629,610.62/489,030.20
  6. Step 6: Final answer
    x = 657,606.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.